MCLAUGHLIN, R. Some Extremal Problems for Functions Univalent in an Annulus. MATHEMATICA SCANDINAVICA, [S. l.], v. 28, p. 129–138, 1971. DOI: 10.7146/math.scand.a-11011. Disponível em: https://www.mscand.dk/article/view/11011. Acesso em: 29 apr. 2024.